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3-1.1 PROXIMITY SWITCH WIRING DIAGRAM
3 - 1 . 3    P R O X I M I T Y    S W I T C H    O P E R A T I O N     

TM-55-1520-240-T-1 CH-47D Heilcopter Manual
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TM 55-1520-240-T 3-1.2 PROXIMITY SWITCH VISUAL CHECK 3-1.2 INITIAL  SETUP Personnel Required: Avionic  Mechanic Applicable Configurations: Medium Helicopter Repairer All Tools: References: TM   55-1520-240-23 Aircraft  Mechanic’s  Tool  Kit, NSN    5180-00-323-4692 Equipment Condition: Battery  Disconnected Materials: Electrical Power Off None Aft Landing Gear Access Panels Open TASK RESULT 1. 2. Check   left   and   right   Ianding   gear   proximi- ty switch relays (1 and 2). Check   right   landing   gear   proximity   switch (3). Check  target  (4)  and  linkage  (5). Repeat steps 2 and 3 for left landing gear prox- imity  switch. On maintenance panel with      ,  check  left and   right   GROUND   CONTACT   lights   (6 If either relay is loose or damaged, tighten or replace it as required. If wiring to the relay socket is dam- aged, repair or replace it as required. If  right  landing  gear  proximity  switch  (3)  is  loose  or damaged, tighten or replace it as required. If wiring to the switch is damaged, repair or replace it as re- quired. If either target (4) or link (5) is loose or damaged, tighten or replace it as required. If either light (6 or 7) is loose or damaged, tighten or replace it as required. 3. 4. 5. and  7). FOLLOW-ON    MAINTENANCE: Aft landing gear access panels closed. END  OF  TASK Change  3    3-9







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